When we received the error that you have about failing to create snapshot of replica devices, we had to make sure that the flash copies at the DR site were mapped to the DR ESXi host cluster, but NOT the change volumes at the DR site. Once we did that the failure to create the snapshots stopped.
I forget if there was anything else we did, on the SAN.
In SRM, for both the protected and recovery site, I went into advanced settings for each site (right click and select advanced settings once in SRM) and changed the storage provider then under storageProvider.hostRescanRepeatCnt [number of repeated host rescans during test and recover] I changed it from 1 to 2.. that still did not give me the result i needed so i changed it from 2 to 3. It helps give the hosts time to rescan and mount any "new" snapshot flashcopies that are slower to prepare.
Do NOT change the storageProvider.resignatureFailureRetryCount [number of times to retry resignaturing a VMFS colume (after a failure)] to anything but 1... this will fail miserably to the extent that the test will instantly fail, and actually cause your flash copies from production to DR to stop!
Thats just the update on what we are going through right now. I have an open PMR with IBM for the remaining issues with the SRA not working well with the SAN. I will keep you posted.
To note, we are at the following code levels as of yesterday:
vCenter 5.1
SRM 5.1
SRA v2.1.0.120916 This I pulled down from VMware's approved SRAs under the My Downloads page..